Speech_Codes

说明：  Matlab源代码，是一些教科书上用到过的代码。(Matlab source code is that some textbooks had used the code.)

system identification(FIR)

Contourlet transform and feature extraction

对心电信号的QRS波进行前期处理，主要是下载信号和对信号去噪滤波。(Of the QRS wave of ECG to pre-treatment, mainly to download signals and to signal de-noising filter.)

关于文本处理图像标注的源码 值得收藏LDA代码(Image processing on the text annotation of the source code is worth collection LDA)

This is code to calculate Kullback-Leibler (KL) distance between histograms. It can apply for 2D image

Embedded Zero tree algorithm......... used for compression...significant positive , significant negative, isolated zero, zero tree

LMS 和 NLMS 算法的比较，用于system identification对在学习随机过程，信号处理，滤波器的人有帮助.(LMS compared with NLAM algorithm for system identification)

minmax filtering in matlab

说明：  平均周期图法和平滑平均周期图法估计功率谱 从经典功率谱估计周期图法原理入手，从理论上分析了其存在的局限性，借助Welch算法对其进行修正。依靠Matlab强大的数值分析和信号处理能力进行实验!! 用周期图法和welch法分别估计了一下信号的功率谱密度。采样频率200Hz，时间序列长度2048，FFT数据点数2048。其中welch法使用hanning窗，窗口长度600．(Average periodogram and periodogram smoothing method to estimate the average power spectrum from the classical power spectrum estimation periodogram principle starting from the theoretical analysis of the limitations of its existence, with the Welch algorithm, amending them. Rely on the powerful Matlab numerical analysis and signal processing capabilities to experiment!! With periodogram and welch method were estimated signal power spectral density about. Sampling frequency of 200Hz, the time sequence length 2048, FFT data points 2048. Welch method which uses hanning window, the window length of 600.)